/*
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 * and open the template in the editor.
 */
package controller;

import dao.ChiTietDonDatHangDAO;
import dao.DonDatHangDAO;
import dao.GiayDAO;
import dao.LoaiGiayDAO;
import dao.MauSacDAO;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.catalina.Session;
import pojo.ChiTietDonDatHangPOJO;
import pojo.GiayPOJO;
import pojo.LoaiGiayPOJO;
import pojo.MauSacPOJO;

/**
 *
 * @author Administrator
 */
@WebServlet(name = "GioHangCuController", urlPatterns = {"/GioHangCuController"})
public class GioHangCuController extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            HttpSession session = request.getSession();

            //Lấy mã tình trạng đơn đặt hàng.
            int maTinhTrang = -1;
            if (request.getParameter("MaTinhTrang") != null) {
                maTinhTrang = Integer.parseInt(request.getParameter("MaTinhTrang"));
            }
            request.setAttribute("MaTinhTrang", maTinhTrang);

            //Lấy mã đơn đặt hàng.
            int maDonDatHang = -1;
            if (request.getParameter("MaDonDatHang") != null) {
                maDonDatHang = Integer.parseInt(request.getParameter("MaDonDatHang"));
            }
            request.setAttribute("MaDonDatHang", maDonDatHang);
            
            if (request.getParameter("btCapNhatGioHangCu") != null) {
                ArrayList<GiayPOJO> gio = (ArrayList<GiayPOJO>) session.getAttribute("GioHangCu");
                session.setAttribute("GioHang", session.getAttribute("GioHangCu"));

                //Xóa đơn đặt hàng cũ.
                boolean kqXoa = DonDatHangDAO.xoa_DonDatHang_Client(maDonDatHang);
                if (kqXoa == false) { //Nếu không xóa được thì không cho phép sửa.
                    return;
                }
                session.removeAttribute("GioHangCu");
                response.sendRedirect(request.getContextPath() + "/GioHangController");
                return;
            }
            //Lấy danh mục loại giày.
            ArrayList<LoaiGiayPOJO> dsLoaiGiay = LoaiGiayDAO.layDanhMucLoaiGiay();
            request.setAttribute("dsLoaiGiay", dsLoaiGiay);

            //Lấy danh mục màu sắc.
            ArrayList<MauSacPOJO> dsMauSac = MauSacDAO.layDanhMucMauSac();
            request.setAttribute("dsMauSac", dsMauSac);

            //------------------------------------------------------------------           

            //Khai báo session giỏ hàng.
            ArrayList<GiayPOJO> gioHang = null;
            gioHang = new ArrayList<GiayPOJO>();
            //Lấy danh sách chi tiết đơn đặt hàng
            ArrayList<ChiTietDonDatHangPOJO> dsChiTietDonDatHang = ChiTietDonDatHangDAO.lay_DanhSachChiTietDonDatHang_TheoDonDatHang_Client(maDonDatHang);

            //Tạo giỏ hàng Ứng với đơn đặt hàng.
            gioHang = new ArrayList<GiayPOJO>();
            for (int j = 0; j < dsChiTietDonDatHang.size(); j++) {
                ChiTietDonDatHangPOJO ct = dsChiTietDonDatHang.get(j);
                GiayPOJO giay = GiayDAO.layThongTinGiay(ct.getMaGiay());
                //Lấy số lượng giày của giày trong chi tiết đơn đặt hàng.
                int soLuongGiay = DonDatHangDAO.lay_SoLuongGiay_TheoMaDonDatHang_TheoMaGiay_Client(maDonDatHang, giay.getMaGiay());
                //Set lại số lượng giày.
                giay.setSoLuong(soLuongGiay);
                gioHang.add(giay);
            }
            //Tạo session giỏ hàng.
            session.setAttribute("GioHangCu", gioHang);

            request.getRequestDispatcher("/client/gio-hang-cu.jsp").forward(request, response);
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
